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Domain Knowledge

clearance of creepage

clearance:

According to the measured working voltage and insulation class, you can determine the distance

But usually: Part of the primary side of the exchange: before the fuse L-N ≥ 2.5mm, L.N PE (earth) ≥ 2.5mm, the fuse device may not do after the request, but as long as possible to maintain a certain distance to avoid short circuit damage to the power supply.

Primary side AC to DC part ≥ 2.0mm

Primary DC ground to earth≥2.5mm (primary side floating to ground)

Partial-to-secondary-side component ≥ 4.0mm, spanned between components on a secondary side

The secondary side of the gap ≥ 0.5mm

Secondary ground to the earth ≥ 1.0mm


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